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Finding the Fourth Proportional to 994.19, 1,373.49 and 662.49

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Solution

The fourth proportional to 994.19, 1,373.49 and 662.49 is: 915.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.19 : 1,373.49 = 662.49 : x
  2. Step 2: Convert to fraction form
    994.19/1,373.49 = 662.49/x
  3. Step 3: Cross multiply
    994.19x = 1,373.49 × 662.49
  4. Step 4: Simplify right side
    994.19x = 909,923.39
  5. Step 5: Solve for x
    x = 909,923.39/994.19
  6. Step 6: Final answer
    x = 915.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.